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| author | Wang Xingchao <xingchao.wang@intel.com> | 2011-09-16 13:35:52 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-09-26 13:25:49 +0200 |
| commit | f4cfb33ed980085b14a8f376281edb2e270f0244 (patch) | |
| tree | d4f4e8387cefcf44068597328e0901f09f45d4bc /kernel/sched_fair.c | |
| parent | bfa322c48dc69bfdaee10faf3bd8dbc23b39a21c (diff) | |
| download | linux-f4cfb33ed980085b14a8f376281edb2e270f0244.tar.gz linux-f4cfb33ed980085b14a8f376281edb2e270f0244.tar.bz2 linux-f4cfb33ed980085b14a8f376281edb2e270f0244.zip | |
sched: Remove redundant test in check_preempt_tick()
The caller already checks for nr_running > 1, therefore we don't have
to do so again.
Signed-off-by: Wang Xingchao <xingchao.wang@intel.com>
Reviewed-by: Paul Turner <pjt@google.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1316194552-12019-1-git-send-email-xingchao.wang@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'kernel/sched_fair.c')
| -rw-r--r-- | kernel/sched_fair.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c index 1ca2cd44d64a..fef0bfde7c8c 100644 --- a/kernel/sched_fair.c +++ b/kernel/sched_fair.c @@ -1106,6 +1106,8 @@ static void check_preempt_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr) { unsigned long ideal_runtime, delta_exec; + struct sched_entity *se; + s64 delta; ideal_runtime = sched_slice(cfs_rq, curr); delta_exec = curr->sum_exec_runtime - curr->prev_sum_exec_runtime; @@ -1127,16 +1129,14 @@ check_preempt_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr) if (delta_exec < sysctl_sched_min_granularity) return; - if (cfs_rq->nr_running > 1) { - struct sched_entity *se = __pick_first_entity(cfs_rq); - s64 delta = curr->vruntime - se->vruntime; + se = __pick_first_entity(cfs_rq); + delta = curr->vruntime - se->vruntime; - if (delta < 0) - return; + if (delta < 0) + return; - if (delta > ideal_runtime) - resched_task(rq_of(cfs_rq)->curr); - } + if (delta > ideal_runtime) + resched_task(rq_of(cfs_rq)->curr); } static void |